›[U]the study of law or the job of being a lawyer: go into/practise/study lawHer mother inspired her to study law.law firm/practice/schoolThis isn't just any law school, it's the one that has more judges in more courtrooms than any other.a law degree/graduate/professor

›[C]a rule which states what always happens when the same conditions exist: the law of sthThe first law of thermodynamics says that energy is conserved in any process involving a thermodynamic system and its surroundings.the laws of physics/science/economicsAccording to the laws of physics this would not be possible.

A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.